Gas Scrubbing Nozzles

Nozzle

In gas scrubbing, droplet size and speed affect efficiency. Very fine droplets improve absorption but may miss coverage, so a balance is needed. Twisting nozzles provide this by producing both fine and larger drops for full spray reach. Different nozzle options are available based on the gas flow rate and cooling requirements. For gas extinguish applications, the TF twisting nozzles with a wide range of spray points and flow rates are suitable. The P range of misting nozzles is a good option for low flow rate applications, while the SA range of high flow rate air atomizing nozzles is ideal for mid-sized gas cooling applications that require rapid liquid evaporation.

Nozzle Selection

Gas scrubbing requires different nozzles based on application. Full cone nozzles are used in venturi scrubbers for high atomization, while hollow cone nozzles suit wet scrubbers for better gas–liquid contact. The right choice depends on gas type, atomization needs, flow rate, and equipment, so expert consultation is essential.

Designing Thought – the Working Climate

• Gases are hot, fast-flowing, and contain corrosive or abrasive pollutants
• Sprayed chemicals can also be corrosive
• Nozzles operate continuously under harsh conditions and wear quickly
• Synergy Spray ST nozzles use abrasion-resistant cobalt alloys or ceramics in high-wear areas

Designing Thought – Gas Course and Speed

Very fine droplets give good absorption but may not cover the full gas flow, reducing scrubber efficiency. A balance of fine mist and larger droplets ensures both absorption and proper spray reach.

Nozzle Decisions

• TF Twisting Nozzles: Versatile, reliable for gas scrubbing
• P-Series Misting Nozzles: Best for small gas flows, low rates
• SA-Series Air Atomizing Nozzles: Ideal for medium gas cooling with fast evaporation

Designing Thought – Droplet Size and Assimilation Rate

Smaller droplets offer better absorption but limited reach in moving gas vents, which can reduce scrubber efficiency. An effective balance is achieved through careful nozzle selection. Twisting nozzles create a mix of fine and heavier droplets, ensuring both absorption and spray coverage.

Nozzle Choice

TF Twisting Nozzles: Wide spray angles and flow rates, ideal for gas scrubbing.

P-Series Misting Nozzles: Suitable for low gas flow and low flow rate needs.

SA-Series Air Atomizing Nozzles: Best for medium gas cooling applications where fast evaporation is critical.

Nozzle Decisions

Wet Cleaning: Involves spraying liquid to react with and remove pollutants (e.g., lime slurry with SO₂). Fine droplets increase reactive surface, but some larger drops are needed to reach fast-moving gas areas—twisting nozzles are effective.

Dry Cleaning: Uses minimal liquid that evaporates in the gas flow, keeping it “dry.” Droplet size must balance evaporation rate and coverage to avoid contamination or ineffective cleaning.

Nozzles for Flue Gas Desulphurization

The huge scope expulsion of S02 from power station discharges has brought about the advancement of a few expert nozzles. Frequently these nozzles will be needed to be produced in scraped spot and disintegration safe materials